Thank you both for your prompt replies, but Krishna: it’s 10 sites and that’s a lot of work to just troubleshoot when there appears to be many other users popping up with the same problem. You could be right, but I’m wondering if I should wait in case someone else realizes this problem is not related to plugins or themes…
Rajesh, as I stated in my initial post, I tried your suggestions before posting without success. We’d all have a more efficient and helpful forum experience if: 1.) we ruled out obvious troubleshooting steps on our own, and 2.) if we actually read the user’s post before replying…